Highly isolated and barely separated antennas integrated with noise free RF-transparent printed circuit board (PCB) for enhanced radiated sensitivity

Abstract

Two antennas based on quarter wave elements angled relative to each other and connected to two ground planes that are also angled relative to one another, having a shorting connection to cancel the extra capacitance and the antennas form a structure similar to IFA or PIFA. The two antennas fed from alternate ends and spaced closely together in which the connection of each antenna to ground causes the ground plane connections to be electrically far apart. A method of manufacturing an antenna system comprising antenna feeds which are connected via a spring pin and a ground pin that is formed partially by a screw connection, spring clip, or spring pin. The antenna elements are stamped and printed on a single non-conducting surface and the antenna carrier is connected to a circuit board that contains the active electronics.

What is claimed is: 
     
       1. A compact electronic device comprising:
 a housing; 
 circuitry; and 
 a first antenna and a second antenna connected to the circuitry and contained in the housing, the first antenna being connected at a proximal end to a grounding plate, the second antenna being connected at a proximal end to the grounding plate, the first antenna and the second antenna being angled relative to one another, such that a distal end of each of the first antenna and the second antenna are physically spaced closer to each other than the proximal ends of the first antenna and the second antenna; wherein the first antenna and the second antenna are each located on adjacent sides of the housing from one another, and further comprising one or more additional antennas located on opposite sides of the housing from the adjacent sides. 
 
     
     
       2. The compact electronic device of  claim 1 , wherein positioning of the first antenna and the second antenna causes ground plane connections to be electrically far apart. 
     
     
       3. The compact electronic device of  claim 1 , wherein the first antenna and the second antenna are driven in from alternating ends causing a high field portion of one antenna to be close to a drive/high current portion of the other antenna, thereby providing high separation of the two high field areas and two high current areas. 
     
     
       4. The compact electronic device of  claim 1 , wherein one or both of the first antenna and the second antenna have a shorting connection to cancel extra capacitance. 
     
     
       5. The compact electronic device of  claim 1 , wherein the first antenna and the second antenna have an antenna structure similar to an Inverted F Antenna (IFA) or a Planar Inverted F Antenna (PIFA). 
     
     
       6. The compact electronic device of  claim 1 , wherein one or more of the first antenna and the second antenna have a multidimensional structure. 
     
     
       7. The compact electronic device of  claim 1 , wherein the first antenna and the second antenna are each fed via a spring pin. 
     
     
       8. The compact electronic device of  claim 1 , wherein the first antenna and the second antenna each include a ground pin formed by any of a screw, spring clip, and spring pin. 
     
     
       9. The compact electronic device of  claim 1 , wherein the circuitry is on a printed circuit board having a ground plane removed in part to allow radiation from the first antenna and the second antenna. 
     
     
       10. The compact electronic device of  claim 1 , wherein the circuitry is on a printed circuit board that utilizes the ground planes. 
     
     
       11. The compact electronic device of  claim 1 , wherein the first antenna and the second antenna are cellular antennas and the one or more additional antennas are for any of Wi-Fi and Bluetooth. 
     
     
       12. A compact electronic device formed by a process comprising steps of:
 forming a first antenna and a second antenna; 
 connecting the first antenna and the second antenna to circuitry; 
 connecting the first antenna and the second antenna to a ground plane; and placing the first antenna and the second antenna and the circuitry in a housing, such that each of the first antenna and the second antenna are angled relative to one another with one end of each spaced physically close and another end of each connected to the ground, wherein the first antenna and the second antenna are each located on adjacent sides of the housing from one another, and further comprising one or more additional antennas located on opposite sides of the housing from the adjacent sides. 
 
     
     
       13. The compact electronic device of  claim 12 , wherein positioning of the first antenna and the second antenna causes ground plane connections to be electrically far apart. 
     
     
       14. The compact electronic device of  claim 12 , wherein the first antenna and the second antenna are driven in from alternating ends causing a high field portion of one antenna to be close to a drive/high current portion of the other antenna, thereby providing high separation of the two high field areas and two high current areas. 
     
     
       15. The compact electronic device of  claim 12 , wherein one or both the first antenna and the second antenna have a shorting connection to cancel extra capacitance. 
     
     
       16. The compact electronic device of  claim 12 , wherein the first antenna and the second antenna have an antenna structure similar to an Inverted F Antenna (IFA) or a Planar Inverted F Antenna (PIFA). 
     
     
       17. The compact electronic device of  claim 12 , wherein one or more of the first antenna and the second antenna have a multidimensional structure. 
     
     
       18. The compact electronic device of  claim 12 , wherein the first antenna and the second antenna are cellular antennas and the one or more additional antennas are for any of Wi-Fi and Bluetooth.